An index number does the following to the variables :

1.	An index number does the following to the variables :
Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/measures-1091959" style="font-weight:bold;" target="_blank" title="Click to know more about MEASURES">MEASURES</a> changes<br/>Averages out changes<br/>Uses 'base' to <a href="https://interviewquestions.tuteehub.com/tag/measure-1091857" style="font-weight:bold;" target="_blank" title="Click to know more about MEASURE">MEASURE</a> changes<br/>All the above</p>Solution :D</body></html>

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